ENVIRONMENTAL ENGINEERING SCIENCE
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2025
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IF 1.8
Jiahao Liu,Jun Zhang,Na Li
An environmentally friendly aerogel (CE/LN), composed of cellulose (CE) and lignin (LN) was synthesized via one-pot cross-linking method at room temperature, followed by freeze-drying. The CE/LN aerogel exhibited good mechanical properties and abundant functional groups, making it an effective adsorbent for the adsorption and removal of the antibiotic trimethoprim (TMP) from water. This study systematically investigated the effects of solution pH, aerogel dose, contact time, initial TMP concentration, temperature, ionic strength, and various water sources on TMP adsorption. The CE/LN aerogel demonstrated a higher TMP adsorption capacity of TMP than the CE aerogel across the entire pH range of 2.0–10.0. The adsorption process was well described by the Langmuir isotherm model and pseudo-second-order kinetic model. The CE/LN 6% aerogel achieved the highest adsorption capacity, with a theoretically maximal TMP uptake of 0.402 mmol/g at pH 6.0. However, high concentration of NaCl significantly reduced TMP uptake on the CE/LN 6% aerogel due to the electrostatic shielding effect. After five cycles of adsorption, the CE/LN 6% aerogel maintained a high adsorption capacity, retaining 80% of its initial uptake. Combined with the adsorption performance, the Fourier transform infrared spectrometry and X-ray photoelectron spectroscopy analyses spectroscopy analysis before and after TMP adsorption, it can be concluded that the adsorption mechanism involved hydrogen bonding, electrostatic interactions, and π–π electron donor–acceptor interactions. Thus, the CE/LN aerogel, with its simple preparation method, good adsorption capacity, and reusability, shows great potential for widespread application in the removal of antibiotics from water.
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DOI
高影响因子
CELLULOSE
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2025
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IF 4.8
Zhang Haopeng,Liu Miaoqing,Zhao Xiaoying,Zhang Lifeng,Yin Xuewen,Lu Jianjun
In this paper, a new green solvent system \(\text{TEAH/EDA/H}_{2}\) O is used to study the dissolution behavior of microcrystalline cellulose. Through FT-IR, XRD, TG, DSC and other characterization methods and molecular dynamics simulation experiments, the results show that this solvent system has excellent solubility for cellulose at low concentrations. When the concentration of the solvent system is 18.75 wt% at room temperature, its solubility for cellulose can reach 13.79 wt%, which greatly improves the solubility of cellulose, and the solubility region is increased. It is also found that EDA increased the solubility of cellulose in the solvent by destroying the crystal structure of cellulose in the early stage of the dissolution process. Molecular dynamics (MD) simulation studies have shown that EDA quickly changes the crystal structure and destroys the interchain hydrogen bonds, and forms an elliptical columnar inclusion complex with \(\text{OH}^{-}\) , \(\text{H}_{2}\) O, \(\text{TEA}^{+}\) and cellulose chains to regulate the hydrophilicity of cellulose, thereby achieving efficient dissolution of cellulose in \(\text{TEAH/EDA/H}_{2}\) O solvents.
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JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2025
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IF 6
Junsik Choi,Jinho Hyun
Complex 3D devices require a printing technique for curved geometries under mild conditions. Here, effective 3D transfer printing is achieved by simple water-assisted adhesion switching using a cellulose nanofiber (CNF) film. Patterns printed on the CNF film are transferred to target surfaces by simple hydration of the CNF film. As the CNF film gradually hydrates, the hydrogen bonding between the printed patterns and the film surface weakens. This reduction in adhesion allows the easy delamination of patterns from the CNF film and the spontaneous transfer to target surfaces such as polymers, ceramics, and metals, which have stronger adhesion than the hydrated CNF surface. This hydration-triggered process enables both high-fidelity printing on curved surfaces and functional integrity and easy repair of electrical devices, paving the way for advanced fabrication of flexible electronic circuits.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Min Mao,Qiangli Zhao,Jiahao Kang,Qiang Mu,Jie Tao,Xiaoliang Zhao,Xinhai He,Jianwei Li
Green cellulose-based triboelectric materials are increasingly in demand for self-powered flexible sensors and energy harvesting applications. However, cellulose exhibits low polarity, limited surface charge generation capacity, weak positive triboelectric properties, and susceptibility to excessive hydration in high-humidity environments, leading to poor structural stability, charge dissipation, and consequently reduced triboelectric performance. In this study, microcrystalline cellulose was utilized as the matrix, while polyethyleneimine and Fe 3+ were incorporated with ethanol fumigation to construct recyclable, biodegradable, and biocompatible composite films. These films feature multi-crosslinked structures and abundant surface/interface morphologies. Ethanol fumigation enhanced the triboelectric output voltage of the film-based TENG by 198 % (248.3 V). The TENG demonstrated exceptional pressure sensitivity (3.136 V/N), high-humidity sensing capability (80–98 % RH, 3.8 V/RH), humidity adaptability, and fatigue resistance (98 % RH, 21,000 cycles). The TENG could simultaneously power up to 500 LEDs and shows potential applications in human health monitoring and intelligent recognition. This study proposes a convenient and scalable strategy to enhance both the triboelectric output and humidity adaptability of cellulose-based triboelectric materials, effectively expanding their practical applications.
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INDUSTRIAL CROPS AND PRODUCTS
·
2025
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IF 6.2
Md. Zahid Hasan,Chuanghua Xu,Lei Luo,K.Z.M. Abdul Motaleb,Md Foysal Ahmed,Sirui Tan,M.Mahbubul Bashar,Jolanta Janutėnienė,Chengfei Yue,Hu Tu,Sha Sha,Guangming Cai,Ruquan Zhang
Conductive hydrogel has garnered significant fascination for its potential as wearable sensor. However, designing a wearable sensor with excellent electrical conductivity, self-healing capability, mechanical strength and recyclability is still difficult to accomplish. Herein, a multifunctional composite hydrogel was fabricated via a one-pot method with cellulose microcrystals (CMCs) and MXene. The introduction of CMCs to the hydrogel composite provided mechanical strength and assisted in homogeneous distribution of MXene resulting the high electrical conductivity. The subsequently prepared conductive composite hydrogel exhibited improved tensile strength (87.4 kPa) and elongation at break (424 %) with optimum composition, outstanding electrical conductivity (1.11 S/cm) and quick electrical self-healing efficiency without external stimuli. The temperature responsiveness of the conductive composite hydrogel was mainly accredited for reducing interfacial thermal resistance ensuing of continuous heat conduction pathways. It also demonstrated the notable fire resistance offering quick fire-warning signals within ∼1 sec. The developed conductive composite hydrogel could monitor subtle human movements efficiently as well as possessed the ability to track human body temperature, indicating effective means of electronic skin (E-skin) for smartphone interfacing. This work introduces a feasible approach in designing an electrically conductive, biodegradable wearable composite hydrogel with potential applications as versatile motion, temperature and fire sensor.
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高影响因子
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
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2025
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IF 6.2
Zhukun Zhang,Duo Wang
This paper explores the feasibility of directly using natural cellulose fibers (CF) with uniform microstructure as catalyst supports to prepare carbon nanotubes (CNTs). Six different Ni-based catalysts are prepared using CF, lignin, biochar, activated carbon, Al 2 O 3 , and ZSM-5 as supports and used for CNTs growth. The reaction conditions including the growth temperature (600–800 ℃) and the metal loading (1–9 wt%) are studied for promoting the synthesis of high-quality CNTs. When the metal loading and the growth temperature are fixed at 5 wt% and 750 ℃, the highest degree of graphitization (I D /I G =0.74) and carbon yield (2080 mg/g cat ) are achieved on Ni/CF due to the optimal interaction between the metal and the support. The CNTs deposited on Ni/CF catalysts during methane decomposition mainly follow a tip growth mechanism. The catalytic performance of Ni-based catalysts on CF is superior to that of Fe- and Co-based catalysts, which is beneficial for CNTs graphitization.
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CARBOHYDRATE POLYMERS
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2012
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IF 3.628
Yihao Luan,Jinming Zhang,Maosheng Zhan,Jin Wu,Jun Zhang,Jiasong He
Using 4-dimethylaminopyridine (DMAP) as the catalyst, highly efficient propionylation and butyralation of cellulose were successfully carried out in an ionic liquid 1-allyl-3-methylimidazolium chloride (AmimCl) under mild conditions. Cellulose propionate (CP) and cellulose butyrate (CB) with a degree of substitution (DS) in the range from 0.89 to 2.89 were synthesized within only 30 min at 30 °C. The DS values of the products could be well controlled just by molar ratio of acid anhydride/anhydroglucose unit (AGU). More interestingly, the conversions of acid anhydrides in both propionylation and butyralation were as high as above 90%, even 96%. Therefore, this work provides a facile and highly efficient way for the synthesis of cellulose esters CP and CB.
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PubMed
高影响因子
Advanced Science
·
2024
·
IF 14.3
Wenbing Wan,Yang Feng,Jiang Tan,Huiping Zeng,Rafeek Khan Jalaludeen,Xiaoxi Zeng,Bin Zheng,Jingchun Song,Xiyue Zhang,Shixuan Chen,Jingye Pan
Uncontrollable massive bleeding caused by trauma will cause the patient to lose a large amount of blood and drop body temperature quickly, resulting in hemorrhagic shock. This study aims to develop a hemostatic product for hemorrhage management. In this study, waste pomelo peel as raw material is chosen. It underwent processes of carbonization, purification, and freeze-drying. The obtained carbonized pomelo peel (CPP) is hydrophilic and exhibits a porous structure (nearly 80% porosity). The water/blood absorption ratio is significantly faster than the commercial Gelfoam and has a similar water/blood absorption capacity. In addition, the CPP showed a water-triggered shape-recoverable ability. Moreover, the CPP shows ideal cytocompatibility and blood compatibility in vitro and favorable tissue compatibility after long terms of subcutaneous implantation. Furthermore, CPP can absorb red blood cells and fibrin. It also can absorb platelets and activate platelets, and it is capable of achieving rapid hemostasis on the rat tail amputation and hepatectomized hemorrhage model. In addition, the CPP not only can quickly stop bleeding in the rat liver-perforation and rabbit heart uncontrolled hemorrhage models, but also promotes rat liver and rabbit heart tissue regeneration in situ. These results suggest the CPP has shown great potential for managing uncontrolled hemorrhage.
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DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
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2024
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IF 10.7
Dan Qu,Peijun Zhang,Jiaolong Liu,Yan Xu,Eyal Zussman,Bing Wei
Lyotropic chiral nematic cellulose nanocrystals (CNCs) have attracted significant attention and great progress has been made. Investigating their physical parameters, especially the twist elastic constant ( K 22 ), is pivotal for advancing our comprehension of fundamental viscoelastic property of chiral nematic phase. In this study, we demonstrate a straightforward method to simultaneously estimate K 22 and helical twisting power ( K t ) of chiral nematic CNCs. This method involves analyzing rheology properties and electro-response of CNCs, focusing on the rotational dynamics and structural reconfiguration of CNC tactoids under an electric field. By examining the rotation dynamics of CNC tactoids under an electric field, together with the viscosity characterization, the anisotropic dielectric susceptibility (∆χ) of chiral nematic CNC along the helix axis was determined. Subsequently, K 22 / ∆χ n was extracted by analyzing CNC tactoid pitch evolution under an electric field, employing the de Gennes model. The K 22 for different concentrated CNCs is finally estimated by integrating experimental results and theory. It is shown that the chiral nematic CNCs present concentration-dependent K 22 , ranging from 0.05 to 0.14 pN, while K t spans from 0.06 to 0.14 pN/μm. This study offers a comprehensive understanding of the CNC fundamental viscoelastic property and opens up new avenues for K 22 measurement in other lyotropic liquid crystals.
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DOI
PubMed
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2024
·
IF 4.4
Jing Zhou,Yingde Xu,Yifan Wang,Shengli Zhu,Zhenduo Cui,Yanqin Liang,Hui Jiang,Xiang Ge,Zhaoyang Li
Calcium sulfate (CS) is a commonly used filling material for bone defects; however, its mechanical strength requires further enhancement. The hydration process of CS significantly influences its mechanical properties. This study aims to improve these properties by incorporating carboxymethyl cellulose (CMC) and silicon dioxide (SiO 2 ) to optimize the hydration process of calcium sulfate hemihydrate (CSH). After adding CMC, the content of CSH in the hydrated material significantly increased, while the amount of calcium sulfate dihydrate (CSD) decreased. In the XPS analysis, the Ca 2p peaks exhibited notable shifts following the addition of CMC and SiO 2 . The mechanisms by which the hydration process influences mechanical strength were further analyzed. It was found that Ca 2+ ions from CSH chelated with CMC, while SiO 2 formed Si-O-Ca bonds with Ca 2+ , both affecting the hydration process of CSH in different ways. The optimal addition amounts of CMC and SiO 2 were both determined to be 1.5 %. Compared to pure CS, the mechanical properties of the experimental group increased by 520 %, rising from 4.28 MPa to 22.25 MPa. Additionally, the injectivity and erosion resistance were improved. All materials showed no cytotoxicity in hemolysis and cell experiments. In summary, this study demonstrates how the mechanical strength of CS can be enhanced by incorporating CMC and SiO 2 to influence its hydration process.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Jiang Shaoqi,Jiang Shan,Chen Sikui,Liu Li,Yan Jiatong,Xiang Cheng,Guo Ronghui
Cellulose aerogel fibers with their unique combination of high porosity, low density, and robust mechanical properties, show great promise as candidates for thermal insulation materials and flexible devices. However, their mechanical performance is inherently limited, and conventional drying techniques such as freeze-drying (FD) and supercritical drying (SCD) are both time-consuming and energy-intensive, posing significant challenges for large-scale industrial applications. Atmospheric pressure drying (APD) has emerged as a simple and cost-effective alternative, demonstrating considerable potential in the fabrication of aerogel fibers. In this study, chitosan was incorporated during the dissolution stage to reinforce the cellulose framework. Following solvent exchange, the material was subjected to APD in an oven, resulting in the fabrication of low-shrinkage chitosan-reinforced cellulose aerogel fibers (CKAF). The porosity of CKAF can be controlled between 38 and 75% by selecting solvents with different surface tensions for solvent exchange and adjusting the affinity between the solvent and the CKAF framework during APD. The shrinkage of atmospheric pressure drying chitosan-reinforced cellulose aerogel fibers (APD-CKAF) with a chitosan content of 10% to cellulose was 11%, which was only 1.9% higher than that of FD (9.1%). However, the pore structure of the APD-CKAF is compact and uniform, with a pore size distribution ranging from 0 to 48 nm, primarily centered around 20 nm, and a porosity of approximately 75%. The APD-CKAF exhibits superior mechanical strength (22.1 MPa, a 16.3% improvement over the FD samples) and elongation at break (55.1%, a 111.5% increase compared with the FD samples). The APD-CKAF exhibits excellent thermal insulation properties over a wide temperature range. This study presents a low-cost and high-efficiency strategy for the fabrication of cellulose aerogel fibers, advancing their potential for thermal insulation applications.
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ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Xueqian Li,Junying Li,Xiaoying Shen,Mengyao Cao,Yu Wang,Wansong Zhang,Yanglei Xu,Zhe Ling,Sheng Chen,Feng Xu
Light-management films that can control solar transmission through themselves, especially those based on renewable and biodegradable materials, are significant for diverse photon-related applications such as energy-efficient buildings, photovoltaics, and optoelectronic devices. Herein, composite transparent films with adjustable haze and UV-blocking capabilities are developed based on the main components of lignocellulosic biomass (cellulose and lignin), and their promising applications in light management are also demonstrated. Carboxymethyl cellulose (CMC) with a good film-forming property is used as the substrate matrix, and cellulose nanocrystals (CNC) with a nanoscale rod-like shape are used as functional fillers. The obtained CMC–CNC composite films exhibit adjustable optical properties (high transparency of >90% and haze of 3.17–13%) and surprisingly enhanced mechanical strength and thermal stability when compared with pure CMC films. Furthermore, lignosulfonates (LS), as industrial lignin products, are combined to endow the CMC–CNC–LS composite films with excellent UV-shielding performance (98.17% UVB and 89.38% UVA), but they well maintain the high transparency and haze. We demonstrate that the composite films are able to avoid color changes of UV test cards by shielding UV light and that they achieve uniform illumination when light transmits through, indicating their promising potential for practical applications in light management. In addition, the effect of CNC and LS contents on the morphological, chemical, mechanical, and thermal properties of composite films is investigated. Our work provides novel insights into the fabrication of sustainable light-management films based on lignocellulose-derived materials by tuning their light-scattering and light-absorbing properties.
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